Change finger count for default gestures in Gnome Wayland (require login/logout after executing this script.)

change_finger_count.sh

function gnome-wayland-change-finger-count() {
  local finger_count=$1
  case "${finger_count}" in
    3|4|5)
      echo "changing finger count to ${finger_count}"

      # check if the file we want to customize is in the gresource list
      if gresource list /usr/lib/gnome-shell/libgnome-shell.so | grep -q 'swipetracker.js'; then
        # create a folder to hold your custom overlays
        mkdir -p ~/.gnome-shell-custom-overlays/ui

        # extract the file we want to customize
        gresource extract /usr/lib/gnome-shell/libgnome-shell.so /org/gnome/shell/ui/swipetracker.js > ~/.gnome-shell-custom-overlays/ui/swipetracker.js

        # change the gesture_finger_count value
        sed -i "s:const gesture_finger_count = [[:digit:]];:const gesture_finger_count = ${finger_count};:" ~/.gnome-shell-custom-overlays/ui/swipetracker.js

        # set the g_resource_overlays environment variable in ~/.config/environment.d/gnome-shell-overlay.conf
        mkdir -p ~/.config/environment.d
        echo 'g_resource_overlays="/org/gnome/shell/ui/swipetracker.js=$home/.gnome-shell-custom-overlays/ui/swipetracker.js"' > ~/.config/environment.d/gnome-shell-overlay.conf
      else 
        echo "swipetracker.js not found in libgnome-shell.so" > /tmp/swipetracker.log
      fi
      ;;
    *)
      echo "usage: $0 [3|4|5]"
  esac
}